How does PageSourceSearch know what foresight.jp is built with?

From the site's own source code. The crawler stores the exact bytes of its pages and first-party scripts; the libraries are recognised by fingerprinting that code against known releases, the identifiers are read out of the tag snippets, and the third-party hosts are the script, iframe and stylesheet sources in the HTML and the absolute URLs inside the scripts. Nothing is inferred from headers or guessed.

How far back does the history of foresight.jp go?

To the first crawl the timeline lists. Every crawl records what the site looked like; when a file's content changes, its earlier version stays viewable because the stored chunks are never deleted, only mapped. A crawl that finds a file unchanged adds no copy.

Can I see an older version of a script from foresight.jp?

Yes. In the stored files list, every date under a file opens the version that was live at that crawl, with the same viewer as the current one. The raw bytes can be downloaded from there.

Which other websites use the same tracking IDs as foresight.jp?

Each identifier links to its reverse lookup, the list of every site in the index whose source carries the same id: the sites one analytics property or tag manager container is shared across.

Site profile

foresight.jp

Built with gtm, gtag, @clerk/ui 1.34.0, @wix/design-system 1.328.0, moment 2.29.1, uikit 3.2.3, dashjs 5.2.1, @marimo-team/frontend 0.25.0, @feathery/react 2.96.0, @reachfive/identity-core 1.42.0, @reachfive/identity-ui 2.1.0, jspdf 4.2.1 and more. 5 pages and 231 stored files, last crawled 2026-10-02.

rank 1,122,330 50 libraries 2 identifiers 43 third-party hosts 1 crawl open the site

Technologies and libraries

Recognised by fingerprinting the stored files and bundles against known releases; a version is the release the bytes match.

Library	Version	Seen
gtm		2026-10-02
gtag		2026-10-02
@clerk/ui	1.34.0	2026-10-02
@wix/design-system	1.328.0	2026-10-02
moment	2.29.1	2026-10-02
uikit	3.2.3	2026-10-02
dashjs	5.2.1	2026-10-02
@marimo-team/frontend	0.25.0	2026-10-02
@feathery/react	2.96.0	2026-10-02
@reachfive/identity-core	1.42.0	2026-10-02
@reachfive/identity-ui	2.1.0	2026-10-02
jspdf	4.2.1	2026-10-02
@mezereon/ui-shopify	2.0.9	2026-10-02
@cognigy/webchat	3.50.0	2026-10-02
oidc-client	1.11.5	2026-10-02
@eppo/js-client-sdk	3.18.0	2026-10-02
luckysheet	2.1.13	2026-10-02
@goodgamestudios/cxf-runtime	0.3.2	2026-10-02
@stlite/mountable	0.75.0	2026-10-02
vue-meta	2.4.0	2026-10-02
vue-phone-number-input	1.12.13	2026-10-02
webex	3.12.0	2026-10-02
@mezereon/bigcommerce-stencil	1.0.30	2026-10-02
ovenplayer	0.10.54	2026-10-02
graphql-playground-react	1.7.28	2026-10-02
@recogito/annotorious	2.7.14	2026-10-02
@flittpayments/checkout	1.17.2	2026-10-02
@shipnity/components	1.4.18	2026-10-02
@genpact/genome.mfe.solidify-app	3.15.1	2026-10-02
replaywebpage	2.5.3	2026-10-02
@sledge-app/js	2.0.114	2026-10-02
@saasquatch/mint-components	2.5.1	2026-10-02
@widgetti/solara-vuetify-app	10.1.1	2026-10-02
vue-ctk-date-time-picker	2.6.1	2026-10-02
@waniwani/sdk	0.21.3	2026-10-02
@gaia-project/viewer	5.12.0	2026-10-02
tia-gpc-widget	3.1.1	2026-10-02
@percy.ai/your-team	1.1.10	2026-10-02
comindware.core.ui	2.1.149	2026-10-02
@scbd/page-footer	0.0.69	2026-10-02
@scbd/sso-vue-plugin-scbd	1.0.5	2026-10-02
@scbd/page-header	0.1.0	2026-10-02
bkl-request-demo	1.0.8	2026-10-02
bowser	2.14.1	2026-09-25
kore-web-sdk	11.28.1	2026-09-25
paymob-pixel	1.2.7	2026-09-25
formiojs	4.21.7	2026-09-25
json-db-admin	0.0.1	2026-09-25
aws-sdk	2.1693.0	2026-09-25
@formio/js	5.6.1	2026-09-25

Tracking, tag and verification IDs

Public identifiers read out of the source. Each links to every other site in the index that carries the same one.

What	Value	Found in
Google Analytics 4 measurement id (Google)	G-XHS76QYEXL	view source
Google Tag Manager container (Google)	GTM-K27NNWC	view source

Third-party hosts

Hosts outside foresight.jp that its pages load scripts, frames or stylesheets from, and that its own scripts name in absolute URLs (connect). Each links to every site loading from the same host.

Host	Loaded as	Found in
api.pinterest.com	connect	view source
api.tumblr.com	connect	view source
b.hatena.ne.jp	connect	view source
bookmark.hatenaapis.com	connect	view source
bsky.app	connect	view source
cdn.jsdelivr.net	script stylesheet	view source
cdnjs.cloudflare.com	script	view source
connect.mail.ru	connect	view source
connect.ok.ru	connect	view source
contract.foresight-inc.co.jp	connect	view source
cse.google.com	connect	view source
fonts.googleapis.com	connect	view source
fonts.gstatic.com	connect	view source
gab.com	connect	view source
getpocket.com	connect	view source
github.com	connect	view source
graph.facebook.com	connect	view source
img.youtube.com	connect	view source
linkedin.com	connect	view source
page.line.me	connect	view source
pinterest.com	connect	view source
pro-mcs-backend-run-560565608851.asia-northeast1.run.app	connect	view source
reactjs.org	connect	view source
schema.org	connect	view source
service.weibo.com	connect	view source
social-plugins.line.me	connect	view source
telegram.me	connect	view source
threads.net	connect	view source
twitter.com	connect	view source
use.typekit.net	connect	view source
vk.com	connect	view source
work.facebook.com	connect	view source
www.facebook.com	connect	view source
www.googletagmanager.com	script iframe connect	view source
www.ibm.com	connect	view source
www.instapaper.com	connect	view source
www.livejournal.com	connect	view source
www.post.japanpost.jp	connect	view source
www.reddit.com	connect	view source
www.tumblr.com	connect	view source
www.w3.org	connect	view source
www.youtube-nocookie.com	connect	view source
www.youtube.com	connect	view source

Stored pages and scripts

The newest stored version of each file, newest first@if (p.FilesTruncated) { (the 500 newest of 231) }. Versions are the crawls at which the file was new or its content changed; each opens the file as it was then, rebuilt from the same stored chunks.

File	Kind	Size	Collected	Versions
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https://cdnjs.cloudflare.com/ajax/libs/uikit/3.2.0/js/uikit.js	js library	not fetched	2026-10-02	current
https://cdnjs.cloudflare.com/ajax/libs/uikit/3.2.0/js/uikit.min.js	js library	not fetched	2026-10-02	current
https://www.foresight.jp/_next/static/chunks/pag…/[course]-1c38a4359d24dc77.js	js	18.9 KB	2026-10-02	2026-10-02
https://www.googletagmanager.com/gtag/js?id=G-XHS76QYEXL	js library	not fetched	2026-10-02	current
https://www.googletagmanager.com/gtm.js	js library	not fetched	2026-10-02	current
https://www.foresight.jp/_next/static/chunks/pag…[[...slug]]-214dd46d906e378f.js	js	1 KB	2026-10-02	current
https://www.foresight.jp/_next/static/chunks/pag…/[slug]-4a9f6bdaa980d1bd.js	js	9.1 KB	2026-10-02	current
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https://www.foresight.jp/_next/static/chunks/pag…/[course]-3e10e679c9994895.js	js	53.4 KB	2026-10-02	current
https://www.foresight.jp/_next/static/chunks/pag…ourse_slug]-c86e63bd836fc6b4.js	js	7.5 KB	2026-10-02	current
https://www.foresight.jp/_next/static/chunks/pages/diagnosis-57ff48705d1a809d.js	js	54.5 KB	2026-10-02	current
https://www.foresight.jp/_next/static/chunks/pag…/[slug]-e410532f739ae822.js	js	4.6 KB	2026-10-02	current
https://www.foresight.jp/_next/static/chunks/pages/campaign-421b547e5a47c474.js	js	812 B	2026-10-02	current
https://www.foresight.jp/_next/static/chunks/4405-12d8dee862e24127.js	js	67.3 KB	2026-10-02	current
https://www.foresight.jp/_next/static/chunks/pag…/[slug]-e4e23a5bd01ce803.js	js	5.1 KB	2026-10-02	current
https://www.foresight.jp/_next/static/chunks/75fc9c18-a8c9805be41684e2.js	js	57.9 KB	2026-10-02	current
https://www.foresight.jp/_next/static/chunks/pages/_error-a4ebc6f11bbda337.js	js	781 B	2026-10-02	current
https://www.foresight.jp/_next/static/chunks/pages/404-300197683a076f2c.js	js	1.6 KB	2026-10-02	current
https://www.foresight.jp/_next/static/chunks/pages/index-5c92df4584768e45.js	js	925 B	2026-10-02	current
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https://www.foresight.jp/_next/static/chunks/6883-62750fbde5ba3eb3.js	js	7.7 KB	2026-10-02	2026-10-02
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https://foresight.jp/_next/static/chunks/4539.befe2609fef1dd13.js	js	34.7 KB	2026-10-02	2026-10-02
https://foresight.jp/_next/static/chunks/2424.0fd111eb7dcc3dbe.js	js	21 KB	2026-10-02	current
https://foresight.jp/_next/static/chunks/3906-77a6fd0645d561d8.js	js	19 KB	2026-10-02	2026-10-02
https://foresight.jp/_next/static/chunks/3788-597099a3c2623a7d.js	js	10.9 KB	2026-10-02	current
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Timeline

One entry per crawl, newest first, with what changed since the crawl before: libraries, identifiers, third-party hosts and files. Historical versions stay viewable because the stored chunks are shared between versions, never copied.

2026-10-02 first crawl

5 pages, 205 files, 7.7 MB; 44 libraries, 2 identifiers, 43 third-party hosts
44 libraries added
- gtm
- gtag
- jspdf 4.2.1
- @reachfive/identity-core 1.42.0
- @reachfive/identity-ui 2.1.0
- ovenplayer 0.10.54
- @recogito/annotorious 2.7.14
- dashjs 5.2.1
- graphql-playground-react 1.7.28
- replaywebpage 2.5.3
- tia-gpc-widget 3.1.1
- @marimo-team/frontend 0.25.0
- and 32 more
2 identifiers added
- GTM-K27NNWC Google Tag Manager container
- G-XHS76QYEXL Google Analytics 4 measurement id
46 third-party hosts added
- cdnjs.cloudflare.com
- cdn.jsdelivr.net
- www.googletagmanager.com
- cdn.jsdelivr.net
- www.googletagmanager.com
- github.com
- www.w3.org
- www.ibm.com
- www.youtube.com
- reactjs.org
- fonts.googleapis.com
- fonts.gstatic.com
- and 34 more
205 files added

Questions about foresight.jp

How does PageSourceSearch know what foresight.jp is built with?: From the site's own source code. The crawler stores the exact bytes of its pages and first-party scripts; the libraries are recognised by fingerprinting that code against known releases, the identifiers are read out of the tag snippets, and the third-party hosts are the script, iframe and stylesheet sources in the HTML and the absolute URLs inside the scripts. Nothing is inferred from headers or guessed.
How far back does the history of foresight.jp go?: To the first crawl the timeline lists. Every crawl records what the site looked like; when a file's content changes, its earlier version stays viewable because the stored chunks are never deleted, only mapped. A crawl that finds a file unchanged adds no copy.
Can I see an older version of a script from foresight.jp?: Yes. In the stored files list, every date under a file opens the version that was live at that crawl, with the same viewer as the current one. The raw bytes can be downloaded from there.
Which other websites use the same tracking IDs as foresight.jp?: Each identifier links to its reverse lookup, the list of every site in the index whose source carries the same id: the sites one analytics property or tag manager container is shared across.

Look up another site, browse sites by tracking ID, third-party host or technology. Site owners: see the crawler page for how stored pages are removed.